In the process of criticism on political economics,Marx critically drew reasonable factors from positivism arisen at that time,so he can use empirical approach felicitously in the political economic research.Meanwhile,he can correctly use normative method because he transcended the limitations of positivism,and made it a complement to empirical approach.Marx’s critiques of political economy made normative method and empirical approach interdependence and become the methods as a subsystem in the political-economic methodology system.These mentioned above are just the logic by which Marx transcended the opposition between normative economics and positive economics.The followings are the great inspirations of such a logic for the methodology of cotemporary Chinese philosophical and economic researches:we should completely and correctly grasp the similarities and differences of the standards in social sciences and natural sciences,including political economics,grasp the relationships among scientific normative research,empirical research and verifiability,reject "scientism" and "philosophism",eliminate the alienation of "scientific conceptions",and enhance the alliance and interactive developments between philosophy and economics.
